package com.sky.service.impl;

import com.alibaba.fastjson.JSON;
import com.alibaba.fastjson.JSONArray;
import com.alibaba.fastjson.JSONObject;
import com.github.pagehelper.Page;
import com.github.pagehelper.PageHelper;
import com.github.xiaoymin.knife4j.core.util.CollectionUtils;
import com.sky.constant.MessageConstant;
import com.sky.context.BaseContext;
import com.sky.dto.*;
import com.sky.entity.*;
import com.sky.exception.AddressBookBusinessException;
import com.sky.exception.OrderBusinessException;
import com.sky.mapper.*;
import com.sky.result.PageResult;
import com.sky.result.Result;
import com.sky.service.OrderService;
import com.sky.service.ShoppingCartService;
import com.sky.utils.HttpClientUtil;
import com.sky.utils.WeChatPayUtil;
import com.sky.vo.OrderPaymentVO;
import com.sky.vo.OrderStatisticsVO;
import com.sky.vo.OrderSubmitVO;
import com.sky.vo.OrderVO;
import com.sky.websocket.WebSocketServer;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;
import org.springframework.web.bind.annotation.PathVariable;

import java.math.BigDecimal;
import java.time.LocalDateTime;
import java.util.*;
import java.util.stream.Collectors;
@Slf4j
@Service
public class OrderServiceImpl implements OrderService {
    @Autowired
    private OrderMapper orderMapper;
    @Autowired
    private OrderDetailMapper orderDetailMapper;
    @Autowired
    private AddressBookMapper addressBookMapper;
    @Autowired
    private ShoppingCartMapper  shoppingCartMapper;
    @Autowired
    private WeChatPayUtil weChatPayUtil;
    @Autowired
    private UserMapper userMapper;
    @Autowired
    private ShoppingCartService shoppingCartService;
    @Autowired
    private WebSocketServer webSocketServer;
    @Value("${sky.shopAdress.name}")
    private String shopAdress;
    @Value("${sky.shopAdress.ak}")
    private String ak;
    /*
     * 用户下单
     */
    @Transactional
    @Override
    public OrderSubmitVO submitOrder(OrdersSubmitDTO ordersSubmitDTO) {
    //处理各种业务异常
        //地址簿
        AddressBook addressBook = addressBookMapper.getById(ordersSubmitDTO.getAddressBookId());
        if(addressBook == null){
            //抛出业务异常
            throw new AddressBookBusinessException(MessageConstant.ADDRESS_BOOK_IS_NULL);
        }
        //购物车
        Long userId = BaseContext.getCurrentId();
        ShoppingCart  shoppingCart = new ShoppingCart();
        shoppingCart.setUserId(userId);
        List<ShoppingCart> cartList = shoppingCartMapper.list(shoppingCart);
        if(cartList == null || cartList.size() == 0){
            //抛出业务异常
            throw new AddressBookBusinessException(MessageConstant.SHOPPING_CART_IS_NULL);
        }
        //向订单表插入一条数据
        Orders orders = new Orders();
        BeanUtils.copyProperties(ordersSubmitDTO,orders);
        orders.setOrderTime(LocalDateTime.now());
        orders.setPayStatus(Orders.UN_PAID);
        orders.setStatus(Orders.PENDING_PAYMENT);
        orders.setNumber(String.valueOf(System.currentTimeMillis()));
        orders.setPhone(addressBook.getPhone());
        orders.setConsignee(addressBook.getConsignee());
        orders.setUserId(userId);
        orders.setAddress(addressBook.getProvinceName()+addressBook.getCityName()+addressBook.getDistrictName()+ addressBook.getDetail());
        //判断距离是否超过5000
        checkIfOutof(orders.getAddress());

        orderMapper.insert(orders);

        List<OrderDetail> orderDetailList = new ArrayList<>();
        //向订单明细表插入多条数据
        for (ShoppingCart cart : cartList) {
            OrderDetail orderDetail = new OrderDetail();
            BeanUtils.copyProperties(cart,orderDetail);
            orderDetail.setOrderId(orders.getId());//设置当前订单明细关联的订单id
            orderDetailList.add(orderDetail);
        }
        orderDetailMapper.insertBatch(orderDetailList);
        //////////
        // 通过WebSocket向客户端浏览器推送消息
        Map map = new HashMap<>();
        map.put( "type", 1);//1来单体型 2客户催单
        map.put( "orderId", orders.getId());
        map.put( "content", "订单号：" + orders.getNumber());
        String json = JSON.toJSONString(map);
        webSocketServer.sendToAllClient(json);
        //////////
        //清空购物车数据
        shoppingCartMapper.clean(userId);
        //封装VO返回
        OrderSubmitVO orderSubmitVO = OrderSubmitVO.builder().id(orders.getId())
                .orderNumber(orders.getNumber())
                .orderAmount(orders.getAmount())
                .orderTime(orders.getOrderTime())
                .build();
        return orderSubmitVO;
    }
    /**
     * 订单支付
     *
     * @param ordersPaymentDTO
     * @return
     */
    public OrderPaymentVO payment(OrdersPaymentDTO ordersPaymentDTO) throws Exception {
        // 当前登录用户id
        Long userId = BaseContext.getCurrentId();
        User user = userMapper.getById(userId);

        //调用微信支付接口，生成预支付交易单
        JSONObject jsonObject = weChatPayUtil.pay(
                ordersPaymentDTO.getOrderNumber(), //商户订单号
                new BigDecimal(0.01), //支付金额，单位 元
                "苍穹外卖订单", //商品描述
                user.getOpenid() //微信用户的openid
        );

        if (jsonObject.getString("code") != null && jsonObject.getString("code").equals("ORDERPAID")) {
            throw new OrderBusinessException("该订单已支付");
        }

        OrderPaymentVO vo = jsonObject.toJavaObject(OrderPaymentVO.class);
        vo.setPackageStr(jsonObject.getString("package"));

        return vo;
    }
    /**
     * 支付成功，修改订单状态
     *
     * @param outTradeNo
     */
    public void paySuccess(String outTradeNo) {

        // 根据订单号查询订单
        Orders ordersDB = orderMapper.getByNumber(outTradeNo);

        // 根据订单id更新订单的状态、支付方式、支付状态、结账时间
        Orders orders = Orders.builder()
                .id(ordersDB.getId())
                .status(Orders.TO_BE_CONFIRMED)
                .payStatus(Orders.PAID)
                .checkoutTime(LocalDateTime.now())
                .build();

        orderMapper.update(orders);


    }
    /*
    * 历史订单分页查询
     */
    @Override
    public PageResult historyOrders(Integer page, Integer pageSize, Integer status) {
        PageHelper.startPage(page,pageSize);

        OrdersPageQueryDTO ordersPageQueryDTO = new OrdersPageQueryDTO();
        ordersPageQueryDTO.setUserId(BaseContext.getCurrentId());
        ordersPageQueryDTO.setStatus(status);

        Page<Orders> page1 = orderMapper. pageQuery(ordersPageQueryDTO);
        List<OrderVO> list = new ArrayList<>();
        if(page1 != null && page1.getTotal() > 0){
            for (Orders orders : page1) {
                Long orderId = orders.getId();// 订单id

                // 查询订单明细
                List<OrderDetail> orderDetails = orderDetailMapper.getByOrderId(orderId);

                OrderVO orderVO = new OrderVO();
                BeanUtils.copyProperties(orders, orderVO);
                orderVO.setOrderDetailList(orderDetails);

                list.add(orderVO);
            }
        }
        return new PageResult(page1.getTotal(),list);
    }
    /*
    * 订单详情
     */
    @Override
    public OrderVO details(Long id) {//因为order和order_detail是不同的数据库
        Orders order = orderMapper.getById(id);

        List< OrderDetail> list= orderDetailMapper.getByOrderId(order.getId());
        OrderVO orderVO = new OrderVO();
        BeanUtils.copyProperties(order,orderVO);
        orderVO.setOrderDetailList(list);

        return orderVO;
    }
    /*
       取消订单
     */
    @Override
    public void cancelorderById(Long id) throws Exception {
        Orders ordersDB = orderMapper.getById(id);
        // 校验订单是否存在
        if (ordersDB == null) {
            throw new OrderBusinessException(MessageConstant.ORDER_NOT_FOUND);
        }

        //订单状态 1待付款 2待接单 3已接单 4派送中 5已完成 6已取消
        if (ordersDB.getStatus() > 2) {
            throw new OrderBusinessException(MessageConstant.ORDER_STATUS_ERROR);
        }

        Orders orders = new Orders();
        orders.setId(ordersDB.getId());

        // 订单处于待接单状态下取消，需要进行退款
        if (ordersDB.getStatus().equals(Orders.TO_BE_CONFIRMED)) {
            //调用微信支付退款接口
            weChatPayUtil.refund(
                    ordersDB.getNumber(), //商户订单号
                    ordersDB.getNumber(), //商户退款单号
                    new BigDecimal(0.01),//退款金额，单位 元
                    new BigDecimal(0.01));//原订单金额

            //支付状态修改为 退款
            orders.setPayStatus(Orders.REFUND);
        }

        // 更新订单状态、取消原因、取消时间
        orders.setStatus(Orders.CANCELLED);
        orders.setCancelReason("用户取消");
        orders.setCancelTime(LocalDateTime.now());
        orderMapper.update(orders);
    }
    /*
    再来一单
     */
    @Override
    public void orderAgain(Long id) {
       //先根据order_id获取订单详情，再加入购物车中
        Long order_id = id;
        List<OrderDetail> list = new ArrayList<>();
        list = orderDetailMapper.getByOrderId(order_id);
        for ( OrderDetail orderDetail: list) {
            Integer number = orderDetail.getNumber();
            for(int i = 0;i < number;i++) {
                ShoppingCartDTO shoppingCartDTO = new ShoppingCartDTO();
                BeanUtils.copyProperties(orderDetail, shoppingCartDTO);
                shoppingCartService.add(shoppingCartDTO);
            }
        }
    }
    /*
    * 条件搜索订单
     */
    @Override
    public PageResult conditionSearch(OrdersPageQueryDTO ordersPageQueryDTO) {
        PageHelper.startPage( ordersPageQueryDTO.getPage(),ordersPageQueryDTO.getPageSize());

        Page< Orders> page = orderMapper.pageQuery(ordersPageQueryDTO);
        // 需要返回订单菜品信息，自定义OrderVO响应结果
        List<OrderVO> orderVOList = new ArrayList<>();

        List<Orders> ordersList = page.getResult();
        if (!CollectionUtils.isEmpty(ordersList)) {
            for (Orders orders : ordersList) {
                // 将共同字段复制到OrderVO
                OrderVO orderVO = new OrderVO();
                BeanUtils.copyProperties(orders, orderVO);
                String orderDishes = getOrderDishesStr(orders);
                // 将订单菜品信息封装到orderVO中，并添加到orderVOList
                orderVO.setOrderDishes(orderDishes);
                orderVOList.add(orderVO);
            }
        }
        return new PageResult(page.getTotal(),orderVOList);
    }
    private String getOrderDishesStr(Orders orders) {
        // 查询订单菜品详情信息（订单中的菜品和数量）
        List<OrderDetail> orderDetailList = orderDetailMapper.getByOrderId(orders.getId());
        // 将每一条订单菜品信息拼接为字符串（格式：宫保鸡丁*3；）
        List<String> orderDishList = orderDetailList.stream().map(x -> {
            String orderDish = x.getName() + "*" + x.getNumber() + ";";
            return orderDish;
        }).collect(Collectors.toList());
        // 将该订单对应的所有菜品信息拼接在一起
        return String.join("", orderDishList);
    }
    /*
    各个状态的订单数量统计
     */
    @Override
    public OrderStatisticsVO statistics() {
        Integer[] statusCount =new Integer[3];
        for(int status=2;status<=4;status++){
            //查询订单状态为status的数量
            statusCount[status-2]=orderMapper.countByStatus(status);
        }
        OrderStatisticsVO orderStatisticsVO = new OrderStatisticsVO();
        orderStatisticsVO.setToBeConfirmed(statusCount[0]);
        orderStatisticsVO.setConfirmed(statusCount[1]);
        orderStatisticsVO.setDeliveryInProgress(statusCount[2]);
        return orderStatisticsVO;
    }
    /*
    接单
     */
    @Override
    public void confirm(OrdersConfirmDTO ordersConfirmDTO) {
        Orders orders = Orders.builder()
                .id(ordersConfirmDTO.getId())
                .status(Orders.CONFIRMED)
                .build();
         orderMapper.update(orders);
    }
    /*
    拒单
     */
    public void rejection(OrdersRejectionDTO ordersRejectionDTO) throws Exception {
        // 根据id查询订单
        Orders ordersDB = orderMapper.getById(ordersRejectionDTO.getId());

        // 订单只有存在且状态为2（待接单）才可以拒单
        if (ordersDB == null || !ordersDB.getStatus().equals(Orders.TO_BE_CONFIRMED)) {
            throw new OrderBusinessException(MessageConstant.ORDER_STATUS_ERROR);
        }

        //支付状态
        Integer payStatus = ordersDB.getPayStatus();
        if (payStatus == Orders.PAID) {
            //用户已支付，需要退款
            String refund = weChatPayUtil.refund(
                    ordersDB.getNumber(),
                    ordersDB.getNumber(),
                    new BigDecimal(0.01),
                    new BigDecimal(0.01));
            log.info("申请退款：{}", refund);
        }

        // 拒单需要退款，根据订单id更新订单状态、拒单原因、取消时间
        Orders orders = new Orders();
        orders.setId(ordersDB.getId());
        orders.setStatus(Orders.CANCELLED);
        orders.setRejectionReason(ordersRejectionDTO.getRejectionReason());
        orders.setCancelTime(LocalDateTime.now());

        orderMapper.update(orders);
    }
    /*
     取消订单
     */
    public void cancel(OrdersCancelDTO ordersCancelDTO) throws Exception {
        // 根据id查询订单
        Orders ordersDB = orderMapper.getById(ordersCancelDTO.getId());
        //支付状态
        Integer payStatus = ordersDB.getPayStatus();
        if (payStatus == 1) {
            //用户已支付，需要退款
            String refund = weChatPayUtil.refund(
                    ordersDB.getNumber(),
                    ordersDB.getNumber(),
                    new BigDecimal(0.01),
                    new BigDecimal(0.01));
            log.info("申请退款：{}", refund);
        }
        // 管理端取消订单需要退款，根据订单id更新订单状态、取消原因、取消时间
        Orders orders = new Orders();
        orders.setId(ordersCancelDTO.getId());
        orders.setStatus(Orders.CANCELLED);
        orders.setCancelReason(ordersCancelDTO.getCancelReason());
        orders.setCancelTime(LocalDateTime.now());
        orderMapper.update(orders);
    }
    /*
    派送
     */
    public void delivery(Long id) {
        // 根据id查询订单
        Orders ordersDB = orderMapper.getById(id);
        // 校验订单是否存在，并且状态为3
        if (ordersDB == null || !ordersDB.getStatus().equals(Orders.CONFIRMED)) {
            throw new OrderBusinessException(MessageConstant.ORDER_STATUS_ERROR);
        }
        Orders orders = new Orders();
        orders.setId(ordersDB.getId());
        // 更新订单状态,状态转为派送中
        orders.setStatus(Orders.DELIVERY_IN_PROGRESS);
        orderMapper.update(orders);
    }
    /*
     完成
     */
    public void complete(Long id) {
        // 根据id查询订单
        Orders ordersDB = orderMapper.getById(id);
        // 校验订单是否存在，并且状态为4
        if (ordersDB == null || !ordersDB.getStatus().equals(Orders.DELIVERY_IN_PROGRESS)) {
            throw new OrderBusinessException(MessageConstant.ORDER_STATUS_ERROR);
        }
        Orders orders = new Orders();
        orders.setId(ordersDB.getId());
        // 更新订单状态,状态转为完成
        orders.setStatus(Orders.COMPLETED);
        orders.setDeliveryTime(LocalDateTime.now());
        orderMapper.update(orders);
    }
    /*
     催单
     */
    @Override
    public void remind(Long id) {
        // 根据id查询订单
        Orders ordersDB = orderMapper.getById(id);
        // 校验订单是否存在
        if (ordersDB == null ) {
            throw new OrderBusinessException(MessageConstant.ORDER_STATUS_ERROR);
        }
        Map map = new HashMap();
        map.put("type", 2);
        map.put("orderId", id);
        map.put("content", "订单号：" + ordersDB.getNumber());
         webSocketServer.sendToAllClient(JSON.toJSONString(map));
    }
    private void checkIfOutof(String adress) {
        ////////////////////////////////////////////////////////////
        String URl="https://api.map.baidu.com/geocoding/v3";
        Map params = new LinkedHashMap<String, String>();
        params.put("address", shopAdress);
        params.put("output", "json");
        params.put("ak", ak);
        params.put("callback", "showLocation");
        String json = HttpClientUtil.doGet(URl, params);
        String jsonStr = json.substring(json.indexOf("{"), json.lastIndexOf(")") );

        JSONObject jsonObject = JSON.parseObject(jsonStr);
        if(!jsonObject.getString("status").equals("0")){
            throw new OrderBusinessException("店铺地址解析失败");
        }

        JSONObject location = jsonObject.getJSONObject("result").getJSONObject("location");
        String lat = location.getString("lat");
        String lng = location.getString("lng");
        //店铺经纬度坐标
        String shopLngLat = lat + "," + lng;
        params.put("address",adress);
        String json2 = HttpClientUtil.doGet(URl, params);
        String jsonStr2 = json2.substring(json2.indexOf("{"), json2.lastIndexOf(")") );
        JSONObject  jsonObject2 = JSON.parseObject(jsonStr2);
        if(!jsonObject2.getString("status").equals("0")){
            throw new OrderBusinessException("店铺地址解析失败");
        }
        JSONObject location2 = jsonObject2.getJSONObject("result").getJSONObject("location");
        String lat2 = location2.getString("lat");
        String lng2 = location2.getString("lng");
        //用户经纬度坐标
        String LngLat = lat2 + "," + lng2;
        Map map = new HashMap();
        map.put("origin",  shopLngLat);
        map.put("destination", LngLat);
        map.put("ak", ak);
        String url = "https://api.map.baidu.com/direction/v2/driving";
        String json3 = HttpClientUtil.doGet(url, map);
        //数据解析
        JSONObject jsonObject3 = JSON.parseObject(json3);
        JSONObject result = jsonObject3.getJSONObject("result");
        JSONArray jsonArray = (JSONArray) result.get("routes");

        Integer distance = (Integer) ((JSONObject) jsonArray.get(0)).get("distance");
        System.out.println(distance);
        if(distance > 5000){
            //配送距离超过5000米
            throw new OrderBusinessException("超出配送范围");
        }
        ////////////////////////////////////////////////////////////
    }
}
